What are Map and Set iterators in JavaScript ES6?

Can you explain what Map and Set iterators are in JavaScript ES6?

Sure! In JavaScript ES6, a Map is a collection of key-value pairs, while a Set is a collection of unique values. Both have built-in iterators.

How do I use the Map iterator to loop through its entries?

You can use the map.entries() method to get an iterator for the key-value pairs. Here's an example: for (let [key, value] of myMap.entries()) { console.log(key, value); }.

What about the Set iterator? How does that work?

For a Set, you can use the set.values() method or simply iterate directly. For example: for (let value of mySet) { console.log(value); }.

Are there any other methods to iterate over Maps and Sets?

Yes! You can also use map.keys() to get an iterator for keys and map.values() for values. Sets have similar methods.